Loading attachment for tractors



Nov. 2 1926.

H. F. LESSMANN LOADING ATTACHMENT FOR TRACTORS.

4 Sheets-Sheet 1 iled Oct. 8, 1923 Nov. 2 1926.

H. F. LESSMANN LOADING ATTACHMENT FOR TRACTORS iled Oct. 8, 1923 4Sheets-Sheet 5 g l n June/14301 hf Z 5.5'MA NN Nov. 2,1926. 1,605,357

H. F. LESSMANN LOADING ATTACHMENT FOR TRACTORS lfid OCT,- 8, 1923 4Sheets-Sheet 4 H El Z3 moan H01,

Patented }Nov. 2, 1926.

UNITED STATES ,PATE/N hoisting and loadin ticularly to tac'hment fo1,605,357 T' OFFICE.

' HERBERT F. LESSMAFN'N, OF DES MOINES, IOWA.

LOADING arracnmnn'r FOR 'raac'roas.

" Application filed Qctober s, 1923. Serial No. 687,256.

My inventionrelates to improvements in g devices and more para simpleand inexpensive atr trac may carry a loading scoop or the like andoperate the same by power.

Another object is to provide .an attach'- ment of the character setforth WhIC-h ls quickly applicable to and removable from 10 the wellknown F ordson tractor Without the necessity of ever 1n th making anyalterations whate tractor construction, novel prov1s1on being made whereby the operating mechanism for the loading scoop, fork or the like, isdriven from the usual powertakeof! shaft of the tractor.

A still fur ing attachment of the class escribed' which ther object isto rovide a loadmay be easily operated by the person driving thetractor, all controls being located within easy reach of the driversseat.

Yet another obj sion for hol like against to the req it to ,dum

A still further-aim is to provide unique" means for carrying 'armsdesirable 'tilti and ldwerin place.

With the ect is to make novel provithe loading scoop or the pg g untilthe load is raised tiltln uired point and for then permitting mouthingthe scoop upon its in such a manner thatunng of the'scoop during raisingg of said arms does not take foregoing and minor objects in view, theinvention resides in the novel constructlon and combination of partsherelnafter described and claimed, th matter being supplemented edescriptive panying drawings.

Figure 1 is a perspective view of my invention attached to a Fordsontractor.

, Figure 2 i moved and, i

\ preferred form 0 Figure 3 .is a viewsimil s a side elevation withparts ren section.

looking in the opposite direction.

Figure 4 section, showin for operatin is a detail elevation partly' inglinore particularly the means i;

e hoistin attachment from the usual power take-off s aft of the tractor.

Figure 5 horizontal section.

is a top plan view partly in .In the drawin I have illustrated the hasbeen operated, bu

my machine, which form successfully constructed t it will be understoodthat the several improvements are not restricted to the exact detailsdisclosed. Furthermore,

tors, whereby the latterby the accom ar to Fig. 2 but and I although ha'with a scoop,

platform, could be su mit use of appearing cordingly;

The loadil'iig attachment" includes a main tachablysecure poseof'yftg'arrying all parts of mechanism and its 0 present showing, useupon a Fordson .tracto base frame shaped for a In'the construction illusincludes a pa'i at opposite sides of the tractor body, the

front ends 0 wardly, bent and bolted to side bars may have shown erelatively lon tion 3, the t provide seats the tractor. are adapted t veshown the machine equipped it will :be understood that a fork or otherequivalent device bstituted for said scoop to perthe loading attachmentfor an desired purpose. Hence,"the word. scoo hereinafter'is to beconstrued g front. section and a rear secwo being bolts or the like 4. Bhave shown the bar so secured together by etween their ends, I ctions 3depressed to 5 to receive the rear axle 6 of Arched clamping members 7opass'over the axle as shown most clearly in Figs..2, 3, and 5 and saidmembers are sections 3 by bars 7 in the vention,

which is ferential bar sections 3 standards 9, while at bar sections areturne dicated vat 10.

For supporting. the front end of the frame, I have or radlus bar motorand to by means of a ki longer than and king-bolt by mean is pivoted.tothe base of the motor.

At some suitable point extreme front end, the

sidebars 1 by bolts or the like 15, said bar .being adapted, in thepresen pass under the front end 0 detachably secured to the bar bolts 8.The clamping mempresent embodiment of the inare connected by atransverse 11 adapted to extend across the difhousing of the tractor.pose yet to appear,-

For a purthe front ends of the are directed upwardly to form their rearends, said d downwardly as in-' shown a V-sha ed supporting 14 securedat 1 ts ends to the t showing, j to f the tractor connected to themachine ng-bolt 16 which is a trifle, issubstituted for the usual s ofwhich the front axle preferably at its rame F carries a frame, throughthe standard 17 which is here shown bolted to the side bars 1 asindicated at 18, said standard being suitably braced by rods 19 andbeing provided with one or more cable guides 20, two being preferablyemployed. Over these guides, I pass a pair of hoisting cables 21 whosefront ends are attached to the front ends of a pair of upwardly swingingscoop-carrying arms 22, the rear ends of these arms being pivoted at 23to the side bars 1. Adjacent the pivots 23 orat other suitable points,the frame F carries cable guides 24 beneath which the cables 21 pass,the rear ends of said cables being wound on a pair of drums 25 which maybe driven at will from the usual power take-off shaft 26 of the tractor.The arrangement described below is preferably employed for this pur- Iose. p The drums 25 rotate with a transverse shaft 27 which is mountedon the downturned ends 10 of the bar sections 3. This shaft is providedwith a bevel gear 28 meshing with a bevel pinion 29 on a longitudinalshaft 30 whose rear end is supported by the instrumentality of asuitable bearing 31 The front end of the shaft 30 passes into a suitablegear housing 32 which is adapted to be bolted at 33 to the tractor, sothat a worm 34 mounted on the shaft 26, may be positioned within saidcasing as shown most clearly'in Fig. 4.

This worm meshes with a worm gear 35 on the front end of the shaft 30and attention may here be directed to the fact that be tween its frontand rear ends, this shaft is divided and is provided with an appropri-,

ate clutch 36 having a controlling lever 37. When the shaft 26 is beingdriven and the clutch 36 is in, the shaft 30 will, through theinstrumentality of the gears 28 and 29 drive the shaft 27 and willconsequently rotate the drums 25 to wind the hoisting cables and swingthe arms 22 upwardly. By releasing the clutch, however, the arms willdescend by gravity and I prefer to employ a brake on the shaft 27 sothat the speed at which the cables are payed out may be controlled. Theform of brake described below is preferred.

A suitable drum 7 shaft 27 and co-operates with a hand brake 39, thisbrake being provided with a forwardly extending operating lever 40 asshown most clearly in Fig. 2. At 41, this lever is adapted to befulcrumed upon the differential housing of the tractor, by means of oneof the usual bolts with which the latter is provided. Attached to thedifferential housing, through the instrumentality of another of'the wellknown bolts, is a rack 42 for temporarily holding the lever 40 in anyposition to which it may be depressed by foot.

The numeral 45 designates a scoop car- 38 is seciired upon the ried bythe front ends of the arms 22 and in"v the present showing, this scoopis pivoted at 46 upon a pair of L-shaped scoop rests 47, the latterbeing in turn pivoted at 46 to the arms 22. At their upper ends, thescoop rests 47 are pivoted, as indicated at 49 to the front ends of apair of longitudinal links 50, the rear ends of these links beingpivoted at 51 to the upper ends of the standards 9. It thus follows thatwhen the arms 22 are raised and lowered, the links serve to alwaysretain the scoop rests 47 in such positions as to prevent undesirabletilting of the scoop 45.

To normally hold the scoop against dumping. but to permit it to tiltforwardly and dump when desired, I provide a pair of latches 52 whichare preferably pivoted to the upper ends of the scoop rests 47 to engagethe upper edge of, the scoop back. Appropriate springs 53 are preferablyused to apply the latches .52. For releasing these latches, I haveprovided the latch-releasing bar 54 which is showmmost clearly in Fig.1, the ends of this bar being bent upwardly and pivoted to the scooprests 47 upon the same pivots 49 which connect the longitudinal links 50with said rests. One end of the bar 54 extends upwardly beyond thepivots 49 and this end is connected by a link 55 with a hand lever 56fulcrumed upon one of the standards 9 within easy reach of the driver ofthe tractor. Pulling upon this lever 56, causes the link 55 to rock thelatch-releasing bar 54, thereby disengaging both latches 52 from thescoop 45 and perniitting the latter to dump upon its. pivots 46. \Vhenthis dumping takes place, the shock may well be absorbed by any suitablecushioning spring such as that indicated at 57 in Figs. 2 and 3.

For again righting the scoop after it has been dumped,I make novelprovision, shown ures, the numeral 60 designates an upstanding leverfulcrumed to the front end of one of the arms 22, said lever beingconnected by a link 61 with the scoop 45, in

particularly in Figs. 1 and 3. In these fig- By constructing theinvention in or approximately in the manner shown and described, it maybe easily and inexpensively manufactured and marketed and will servevery expeditiously to convert a tractor into a power driven motor orother hoisting machine. Without making any changes whatever in thetractor construction, the attach- 6 scoop 45 lowered, whereby to loadthe latter. This having been done, the clutch con trolling lever'37 isoperated to throw the clutch 36 into play, thereby 1 driving the drums25 and causing'the cables to swing l them-111522 upwardly. This havingbeen done, the machine may be again propelled to position the loadedscoop over a wagon, manure spreader or other receiver, whereuponoperation of the lever 56 will release the latches 52 and permit thescoop to dump into said receiver. By means of the scoop resetting means61', 62 and 63, the scoop may now be righted and held by the latches 52so that when the arms 22 are again lowered,

the machine is in readiness for reloading.

Since excellent results have been obtained from the several detailsherein shown, they are preferably followed when the invention isattachedto a Fordson tractor, but itis to be understood that within the scope ofthe invention as claimed, numerous minor changes may be made.

I claim 1. The combination with a tractor having a transverse powertake-off shaft; of 'a base frame mounted detachably on said tractor,-a'hoisting device mounted on said base, frame and having a transverseoperating shaft mounted at the rear end of said frame,

- a longitudinal shaft adjacent one longitudinal side of the framemounted at one end on said frame and operatively associated with saidoperating shaft, means for supporting the other end of said longitudinalshaft from the tractor independently of said frame, and means fordriving said longitudinal shaft from said power take-off shaft.

2. An attachment for tractors comprising a base frame provided with sidebars support for'said frame having provision for connection to thekingbolt of the front axle of the tractor. c .4. An--attachment'fortractors com-prising a'hoisting device having a base frame,

i means for detachably clamping saidefra'me to the rear end of thetractor, and a V.- shaped supporting bar secured at its ends to thefront end of said frame, the center of said V-shaped bar having an oening adapted to receive akingbolt of tii of the tractor.

An attachment for tractors comprising a base frame provided with sidebars to receive the body of a tractor therebetween,

said bars being adapted to extend under the rear axle of the tractor andto project rearwardly from said axle, clamp members adapted to extendover the axle, bolts for securing said clamp members and said side barstogether, means for supporting the front end of the frame, and hoistingmeans mounted on said frame and including a trans? verse shaft supportedby the rear ends of said side bars for disposition behind the rear axleof the tractor.

6. An attachment for tractors comprising a hoisting device having a baseframe provided with side bars to receive the body of a tractortherebetween, said bars being e front axle- 7 adapted to extend acrossthe rear axle of the V tractor, clamp members to extend across the sideof the axle opposite said side bars, bolts ,for securing said clampmembers and side bars together, a cross bar secured to andextending-between said clamp membersand adapted to extend across thedifferential housing of the tractor, and means for supporting the frontend of the aforesaidbase frame.

7. An attachment for tractors comprising w wardly, a drum mountedbetween said downturned bar ends and instrumental in operating saidhoisting device, and means extending forwardly from the drum shaftadjacent one side bar of the frame for connection or' operating .saiddrum.

8. A hoisting attachment for tractors comprising a A base frame carryinghoisting IIlGaHS' 1I1Cll1dlDg a transverse operat ng of the framemounted at one .end on said frame and. operatively associated with saidoperating shaft, means whereby the other ported from the tractor anddriven from a po'wer'take-off shaft, and means whereby said frame-may bedetachably mounted upon the tractor. I

9. A hoisting attachment for tractors adapted for disposition behind therear axle I with the power take-off shaft of the tractor, no i toreceive the body of the tractor therebef tween, "said bars being adaptedto extend.

shaft at the rear end of said frame, a longitudinal shaft adjacent onelongitudinal side end of said longitudinal shaft may be sup- 6 of saidarm, a link pivoted to said scoop rest at a point spaced from thepivotal axes of the same and pivoted to said frame at 'a point spacedlaterally from the plvot of said arm, a scoop pivoted-on said scooprest, and release means for normally holding the scoop against dumping.

11. A hoisting machine comprising a frame, a vertically swin inghoisting arm pivoted thereon, a pivote scoop carried by the free end ofsaid arm and releasable means for normally holding it against dumping,an

upstanding lever fulcrumed to said arm ad-v jacent said scoop, alinkpivotall connecting one endof said lever with em scoop, and

means extending from said lever to said frame for operating the formertoreturn the scoop to normal position after dumping.

12. A hoisting machine comprising a frame, a pair of vertically swingingarms mounted on said frame, av-tilting scoop on the front end of saidarms, scoop holding latches on said arms, a latch releasing barextending between said arms and having laterally extending ends pivotedto said arms and means for swingingsaid bar on its pivots to releasesaid latches.

13. In combination with a. tractor, a hoisting attachment comprising aframe adapted to be attached to said tractor, a vertically swinging armivoted to said frame and extending beyon the forward end of the tractor,a substantially L-shaped scoop rest carried by said arm, said arm andthe base portion of said scoop rest occupying substantially horizontalpositions for load= ing, a scoop having its bottom resting on andprojecting forwardly ofthe base. of said scoop rest and its back wallresting against I the upright member of said scoop rest when in loadingposition, whereby forward ad-' vance of the tractor will be communicatedthrough said frame, swinging arm and scoop rest to the scoop for loaingpurposes, and

forwardto be atreleasable latching means for normally holding said-scoopin loading position on said scoop rest. r

14. In combination with a tractor, a hoisting attachment comprising aframe adapted to be-attached to said tractor, a vertically swin 'n armivoted to said frame and extending eyon the forward end of the tractor,a substantially L-shaped scoop rest pivotally mounted on said arm, saidarm an the base portion of said scoop rest occupying substantiallyhorizontal positions for loading, a scoop having its bottom resting onand projecting forwardly of the base of said scoop rest and its backwall resting against the upright member of said scoop rest when inloading position, whereby forward ad vance of thetractor will becommunicated through said fra as, swinging arm and scoop rest forloading purposes, means to normally prevent tilting of said scoo rest,and releasable latching means for ho ding the scoop in loading positionon said scoop rest.

15. hoisting machine comprising a frame, a vertically swinging armpivoted thereto, a substantially lL-shaped scoop rest pivoted to thefree end of the said arm, a link pivoted to said scoop rest at a pomtspaced from the pivotal axis of the same and pivoted to said frame at apoint spaced laterally from the pivot of said arm, a scoop pivoted onsaid scoop rest and adapted when In loading position to have its backand bottom walls in close contact with the arms thereof, and releasablemeans for normally holdin the scoop against dumping.

16; K hoistin machine comprising a frame, a pair of vertically swingingarms mounted on"said frame, a tilting scoop on the front end of saidarms, scoop holding latches on said arms, a latch releasing barextending between said arms and having laterally extending ends pivotedto said arms, one of said laterally extending arms being extended beyondits pivot to form a lever, a link pivotally connected to said lever andextending rearwardly of the frame, and a manually operable lever forreciprocating said link to permit dumping of the scoop.

, In testimony whereof I have hereunto aflixed my signature.

' HERBERT F. LESSMANN.

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